Valve.



i. M. SULLIVAN. VALVE.

APPLICATION FIFE!) DEC.2?. 1916.

1 ,277, 1 53. Patented Aug. 27, 191&

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JOSEPH M. SULLIVAN, OF DETROIT, MICHIGAN, ASSIGNOR T0 ALEXANDER J. MODONOUGI-I, OF DETROIT, MICHIGAN.

VALVE.

Specification of Letters Patent.

Application filed December 27, 1916. Serial No. 139,190.

To all whom it may concern.-

Be it known that I, JOSEPH M. SULLIVAN, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Valves, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to a valve and more particularly to a feed valve adapted to control the water admitted to a boiler, or the steam admitted to a fuel pump for a boiler. The object of the invention is to obtain a construction in which the valve proper is balanced when water is being admitted to the boiler or steam is being admitted to the pump and in which the valve proper is slightly unbalanced to maintain the valve seated when the water or steam is not being admitted. Another, object of the invention is to obtain a construction in which the valve seat cage and the valve proper are interchangeable with other cages and valves proper. A further object of the invention is to obtain a construction in which the cage may be easily secured within and removed from the. valve body and will perfectly aline with the valve proper. Still other objects of the invention will more appear.

In the drawings:

Figure 1 is an elevation partly in section of the construction embodying my invention;

Figs. 2 and 3 are perspective views respectively of the valve proper and the valve seat cage. I

A represents the valve body of globe shape, having the inlet and outlet passages and A respectively therein and provided with the diagonally extending bridge B having the opening B therein connecting the passages. Engaging the bridge and fitting within its opening is the hollow valve seat cage C of cylindrical form, provided with the tapering extension C engaging the correspondingly tapering wall 13 of the opening B for the purpose of forming a tight seal between the cage and the bridge. The cage is further provided with the shoulder C for limiting the upward movement thereof.

Fitting with'n the valve seat cage C is the hollow cylindrical valve proper D, the rrangement being such that the valve .operable fully hereinafter proper has a double seated engagement with the cage. As shown, the valve seat cage is provided with. the seats D and D on its inner wall and the valve proper is provided with the cooperating seats E and E on its outer wall. The valve proper has the radial upwardly and inwardly extending arms F terminating in the threaded portion F for engaging the valve stem G, which in turn engages an automatically operating device by variation in the quantity of water in the boiler to which the water is being admitted. (Not shown.) The valve seat cage C is provided with the ports H extending around the circumference and located intermediate the seats D and D and also with the partition I adjacent and beneath the innerseat D For the purpose of having the construction balanced when; the water or steam is passing through the valve the portion of the valve proper D intermediate its seats D and D is of smaller diameter than the cage, providing a space between the walls of the valve proper and the cage, so that a portion of the water or steam being admitted through the ports H of the cage is permitted to flow between the valve proper and the cage in an outer direction and past the seats D and E. The remaining portion of the water or steam being admitted through the port flows inwardly and past the seats D and E and then upwardly through the valve proper D past the radial arms F. While the water or steam is being admitted the pressure upon the valve proper in opposite directions is substantially equal because of the substantially equal pressure areas upon opposite sides of the valve proper. However when the water or steam is not being admitted these equal pressure areas are destroyed due to the valve proper being seated so that the valve proper is readily maintained in its seated position.

For the purpose of inserting the valve seat cage and valve proper with its stem into the valve body A, the latter is provided with the cap J removably secured thereto by means of the stud bolts J. Gentrally located and threadedly engaging the cap J is the set screw or cap screw K extending within the valve body and adapted to engage the lower end of the valve seat cage, or in the present case the partition I, so that the cage may be firmly adjusted into engagement with the bridge of the Valve body, the seal therebetween being tight due to the cooperating tapering extension on the cage and the tapering wall of the opening in the bridge.

For the purpose of providing means for easily withdrawing the cage from the valve body, the cage has the downwardly extending hollow projection L having the apertures L located in the periphery thereof which may be engaged by means of hooks extended up through the hollow projection or by means of wires having bent ends.

At times when the valve is being employed to control .the steam admitted to the boiler feed pump it is desirable to have a continuous passage of steam to the pump when the valve proper is closed. For this purpose the set screw or cap screw K is formed hollow and has the openings M in the walls thereof, and the partition I has the aperture N therein in axial alinement with the set screw or cap screw K, the aperture N being of smaller cross sectional area than the set screw or cap screw, so that the latter seals the former. Threadedly engaging the set screw or cap screw as at O is the valve member P having the needle portion 0 for fitting within and sealing the aperture N.

Vith this construction when the valve proper is seated within the valve seat cage and it is desired to have a continuous passage of steam through the valve to the pump the valve member P is turned to move the needle portion 0 from the aperture N the desired distance, when the steam passes through the inlet passage A, apertures L, Openings M, aperture N, hollow valve proper D and outlet passage A to the pump (not shown).

From the above description it will readily be seen that the parts forming the valve have an entirely metal contact with each other, are simple, and may be easily assembled and disassembled.

It is to be understood that-the valve may be used in controlling the operation of other devices than the feed pump, such for example as a stoker.

What I claim as my invention is:

1'. A valve, comprising the combination with a hollow cylindrical valve proper having seats at opposite ends, of a cage having cooperating seats and an opening in the wall thereof intermediate said cooperating seats, said cage having an extension with an opening in the wall thereof and a partition extending thereacross intermediate said openings.

2. A valve, comprising the combination with a hollow cylindrical valve proper, having a seating portion, of a cage having a cooperating seat and an opening in the wall thereof, said cage having anextension with an opening in thewall thereof and a parti- Copies of this patent may be obtained for five cents each, by addressing the tion extending thereaeross intermediate said openings in the cage, provided with an opening therein, a hollow set screw engaging said partition in substantial alinement with the opening therein, said set screw having an aperture in the wall thereof and means within said hollow set screw for engaging in said opening in the partition.

3. The combination with a valve body, having a bridge with an opening therein, of a valve seat cage comprising an extension at one end for engaging in said opening, an integral extension at the opposite end with an aperture in its wall for facilitating the removal of said cage and a cross partition intermediate said extensions and adjacent to said last mentioned extension, and means for adjusting said first-mentioned extension into engagement with its opening.

4. A valve comprising the combination with a hollow valve proper having a seating portion, of a cage having a cooperating seat and an opening in the wall thereof, said cage having a partition extending thereacross provided with an opening therein, a hollow set screw engaging said partition in substantial alinement with the opening therein, said set screw being provided with an aperture in I the wall thereof, and a longitudinally movable member within said hollow set screw for engaging in said opening in the partition.

11 a Valve, the combination with a valve body having a bridge with. an opening therein, of a cage comprising an extension at one end for engaging in said opening and an extension at the opposite end with an opening in the wall thereof, said cage having a partition extending thereacross intermediate said extensions and adjacent to said last mentioned extension, said partition having an aperture therein, means engaging said partition for maintaining the first mentioned extension in engagement with the opening in said bridge and means for variably engaging in the aperture in said partition.

6. In a valve, the combination witha valve body having a bridge with an opening therein, .of a cage comprising an extension at one end for engaging in said opening and an extension at the opposite end providedwith a shouldered portion in its wall for facilitating the removal of said cage from the valve body, said cage also having a partition extending thereacross intermediate said extensions and adjacent to said last-mentioned extension and a hollow body portion intermediate said partition and first-mentioned extension provided with an aperture in its wall and'a seat, and a hollow cylindrical valve proper having a seat for cooperating with said cage seat.

In testimony whereof I aflix my signature.

JOSEPH M. SULLIVAN,

Washington, D. G." 

